/*
package NiuKe;

import java.util.Arrays;
import java.util.Scanner;

*/
/**
 * @Description:
 * @Author: Hanzao
 * @Date: 2022/06/14/1:05
 *//*

public class HJ34 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String s = scanner.nextLine();
        char[] chars = s.toCharArray();
        Arrays.sort(chars);
        for (char aChar : chars) {
            System.out.print(aChar);
        }
    }
}
*/
